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    SubjectRE: 2.6.9 chrdev_open: serial_core: uart_open
    Date
    Successful resolution!! The red-hat engineers monitoring their bugzilla list
    posted a fix for tty_io.c Friday that works. Thanks again for your help.
    karl m

    > -----Original Message-----
    > From: Russell King
    > Sent: Friday, July 15, 2005 2:54 PM
    > To: karl malbrain
    > Cc: Linux-Kernel@Vger. Kernel. Org
    > Subject: Re: 2.6.9 chrdev_open: serial_core: uart_open
    >
    >
    > On Fri, Jul 15, 2005 at 02:17:01PM -0700, karl malbrain wrote:
    > > > -----Original Message-----
    > > > From: Russell King
    > > > Sent: Friday, July 15, 2005 1:59 PM
    > > > To: karl malbrain
    > > > Cc: Linux-Kernel@Vger. Kernel. Org
    > > > Subject: Re: 2.6.9 chrdev_open: serial_core: uart_open
    > > >
    > > >
    > > > On Fri, Jul 15, 2005 at 01:52:15PM -0700, karl malbrain wrote:
    > > > > On my 2.6.9-11EL source it clearly shows the up(&tty_sem) after
    > > > the call to
    > > > > uart_open. Init_dev never touches tty_sem.
    > > >
    > > > In which case, I have to say...
    > > >
    > > > Congratulations! You've found a bug with Red Hat's Enterprise Linux
    > > > kernel! Go straight to Red Hat's bugzilla! Do not collect 200$. Do
    > > > not pass go.
    > > >
    > > > Seriously though, this bug is not present in mainline kernels, so I
    > > > can't resolve this issue for you. Mainline kernels appear to work
    > > > properly.
    > >
    > > Could tty_io.c be all that changed by a small set of red-hat patches to
    > > 2.6.9? Why would they need to go in there to make so many
    > changes in the
    > > first place? Which 2.6 release changed tty_io.c's use of tty_sem so
    > > heavily?
    >
    > These are questions to ask of Red Hat, and can only be answered by
    > their representatives.
    >
    > Thanks anyway, and I'm sorry that this hasn't been resolved given
    > the amount of time put into it by both of us.
    >
    > --
    > Russell King
    > Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/
    > maintainer of: 2.6 Serial core




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